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T. DAWKINS.

KEY BOARD EOE REED MUSICAL INSTRUMENTS. No. 248,881. 8888111911 July 5,- 1881.

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'UNITED STATES PATENT OEEICE.

THOMAS DAVKINS, OF LONDON, COUNTY OF MIDDLESEX, ENGLAND.

KEY-BOARD FOR REED MUSICAL INSTRUMENTS.

SPECIFICATION forming part of Letters Patent No. 243,861, dated July 5, 1881. Application lcd February 2S, 1881. (No model.) Patented in England July 12, 1879.

To all whom it may concern:

Be it known that I, THOMAS DAWKINs, a subject ot' the Queen of Great Britain, residing at OharterHouse street, London, in the county of Middlesex, England, importer and manufacturer of musicalinstrumen ts, have invented certain new and useful Improvements in Key- Boards for Reed Musical Instruments, (for which I have received Letters Patent in England,No. 2,847, dated 12th July, 1879,) ot' which the following is a specification.

This invention relates to improvements in the arrangement ot' the notes and keys of vibrating reed musical instruments acting on the principle ot' the accordion, concertina, harmonium, and other like musical instruments, which improved instrument I propose to call the polychord.7

The general arrangement of this improved musical instrument consists` of, a key-board with keys arranged in rows, and divided into sections or groups to form chords. The action consists ot' levers with springs and pallets similar to those of the harmonium and other like musical instruments. is arranged with reeds or vibrators attached thereto, combined with bellows suitably arranged, and having a suitable lever handle or handles to actuate the same. The form and compass of the instrument may be considerably varied.

In order that my invention may be clearly understood and readily carried into practice, I will proceed to describe the drawings hereto annexed, which show several views of a musical instrument arranged and constructed in accordance with my improvements.

Figure 1 is a plan, Fig. 2 a longitudinal section, Fig. 3 an end view, and Fig. 4t a transverse section, of the same.

A A in all the gures is the key-board, ar ranged with keys c a l b c c in parallel lines,

A soundingboard divided into groups 1 2 3 4C 5, (or it may be more or lessin number,) which groups contain full chords in the tonic, dominant, and subdominant of each major and minor key, the major being placed at the side ot' its relative minor. In each of the groups 1 2 3 et 5, (shown in Fig. 1,) a and a. represent, respectively, the keys arranged to correspond with the notes of tonic major and relative minor chords in one key, b and b the same for the dominant chords in the same key, and c c the same for the sub-dominant. The longitudinal and transverse sections, Figs. 2 and 4, show the arrangement and construction ot' the notes, keys, and bellows, d being the lever-handlc by which the bellows are actuated, and d another lever-handle used for the same purpose.

A set ot'keys may be also arranged chromatically in the same order as that of the pianoforte, as represented by Figs. 5 and 6 of the drawings, for the purpose of playing symphonics or airs on the instrument when desired.

Having thus described my invention, and the manner ot' carrying the same into practice, I would remark that I do not claim any ot1 the parts separately, which are well known and in common use; but

A musical reed instrument in which the keys are arranged upon the key-board in parallel lines divided into sections, each section having the keys grouped or arranged to correspond with the notes ot the full chords of the tonic, dominant, and sub-dominant of a major key and its relative minor, as set forth.

THOMAS DAWICINS.

Witnesses:

13T-ros. LAKE, W. J. NoEWooD, Both of 17 Grcccchurch Street, London. 

